Locking attachment for dust bags



April 19, 1932. -r 1,855,028

LOCKING ATTACHMENT FOR DUST BAGS Filed Nov. 26 1926 llllllllllll I ll rllllllllll [II Patented Apr. 19, 1932 UNITED STATES PATENT OFFICE EUGENE F. MARTIN ET, OF CLEVELAND, OHIO, ASSIGNOR TO THE PLA. GEIER COMPANY,

OF CLEVELAND, OHIO, A CORPORATION OF OHIO I LOCKING ATTACHMENT FOR DUST BAGS Application filed November 26, 1926. Serial No. 150,748.

My invention relates to improvements in looking attachment for dust bags and the like'and has for its object the provision of simple, readily operated and efiicient means for removably but securely attaching the dust bags of suction cleaners in dust-tight relation upon the casing, as well as facilitating the removal thereof.

Various attaching means have previously been devised for dust bags and the like, but it has been found diflicult to combine the features of secure attachment and of easy detachment of the associated dust bag and suction cleaner casing. It is obviously very undesirable that connecting means of this type should be liable to accidental disconnection, since the collected dirt will be spilled and blown about the room and upon the person of the user. Moreover, even a slight leakage of the dust laden air is suflicient to nullify, in part, the purpose of suction cleaning. since the dust that escapes is merely redistributed by the atmosphere.

Accordingly, it has been my purpose in perfecting the instant improvement to provide a thoroughly practical connection for appliances of this general character. The essentials of my connecting means are notably simple, comprising a rotatable eccentric, and a fixed projection coacting with a con necting member mounted for rocking movement interiorly of one of the connected elements for maintaining the same tension upon b oth sides of the connected inlet or collar.

The features of my improvement and details of construction, however, may best be explained by making reference to the accompanying drawings, wherein:

Figure 1 is a small fragmentary view of a suction cleaner in side elevation, to which my improvements are applied;

Fig. 2 is an enlarged rear View of the-suction cleaner casing showing the discharge outlet and one member of the attaching means for the dust bag;

Fig. 3 is a fragmentary cross section on the line 33, Fig. 2, illustrating the assembled attaching means;

Fig. 4: is another fragmentary cross section Throughout the several figures of the drawings I have employed for similar parts, the same designating character or reference letter.

A portable type suction cleaner is shown in Fig. 1 of the drawings which includes a fan casing a, a nozzle '6, and a tubular discharge element '0. An elongated collar 05, which forms the tubular mouth of the dust bag 6, is removablyposition-ed over the opening 0 and the dust barrier 0 of the discharge element 0.

Referring to Figs. 3 to 6, inclusive, the separable coupling for tubular elements which forms the subject matter of the present improvement is shown in detail on a larger scale and includes a substantially U-shaped connecting member f provided with engaging means at its ends such as terminal lugs f. The connecting member f is mounted interiorly of the tubular elements for'rockingmovement transversely of-the axes of the tubular elements 0 and d bymeans of, screws g and washers g which are carried by the dust carrier 0'. i v y Y The collar (i is provided with connecting means which project interiorly thereofin opposing relation for coacting with the:con-- nectingmember 7 for locking the tubular elements together. The connecting means includes the fixed detent orprojectiond and the stud oreccentric member. 72, movably mounted on the rotatable locking member it provided with the actuating ring h". The

actuatingring It" also secures the locking behind and engagethe lugs fwhen the eccentric member 72. is in its releasing position, thus forming a loose removable con- 1 C necting element for the suction cleaner dust bag.

Upon slipping the members d and h be hind the lugs f of the connecting member f, the locking member 71, is rotated so as to engage its eccentric projection it against one of the lugs f to rock the connecting member 1 to a'tilted position as shown in Fig. 4.

he connecting member rocks transversely of theaxes of the tubul-arflelements or in a plane parallel with thelongitndinal axes of the tubular elements, and in so rocking, the pressure between the lugs f'rand the projections 03 and h is equalized and brings the rim of the collar d firmly into dust tight relation with the suction cleaner element 0, thereby locking the elements a and d firmly together against accidental detachment,

The dust bag may be readily unlocked and removed from its connection with the discharge element 0 by merely rotating the locking member h and eccentric It, so as to release the projections d and h from tight engagement with the lugs fand permit detachment of the collar d from the suction cleaner casing so that the contents of the dust bag may be readily emptied therefrom; The small size of the inward projections cl and h form onlynegligible obstructions in the large mouth of the bag and permit the bag to be easily emptied when the same is detached from the suction cleaner discharge outlet 0. a

Having now described apreferred embodiment of my invention, I claim as new and desire to secure by Letters Patent, together with equivalents thereof, the following:

' v 1. In a separable coupling for tubular elements, a connecting member provided with engaging. means at its ends mounted on one of said elements interiorly of said elements for rocking movement within said elements transversely of the axes of said elements, and

7 connecting means disposed interiorly of the second tubular element coacting with the connecting'member, including a fixed projection and an eccentric member movably mounted on said second element and having a portion projecting into the path of movement of said connecting member for engagement with the engaging means thereof for locking the tubular. elements together.

2. In a separable coupling for tubular elements," a connecting member provided V with engaging'means'at its endsmounted on one jection and an eccentric member movably mounted on saidsecond element and having a portion projecting into the path of movement of said connecting member for engagement with the engaging means'thereof for locking the tubular elements together.

In testimony whereof I do now aifix my signature. 7 r

EUGENE F. MARTINET,

of said elements interiorly ofsaid elements for rocking movement within said elements transversely of the axes of said elements, and

connecting means disposedinteriorly of the second tubular element coacting with the engaging means of the connecting member, said connecting, means including a fixed projection, and a movably mounted member having aportion projecting into the path of movement ofsaid connecting member for engage- 

